5 Reasons Why Your Speedometer is Not Working?

We are all aware of how important the speedometer is to the car. When this component breaks down, it not only affects your ability to drive under the speed limit but may also be a sign of more serious problems with the general condition of your vehicle. In this post, we'll look at some of the typical causes of faulty speedometers and talk about several diagnostic techniques that can be used to find the issue and fix it.

Reasons Why Your Speedometer is Not Working

Broken speedometer cable

Many older vehicles use a mechanical speedometer cable to connect the transmission to the speedometer. If this cable is damaged or broken, it may result in the speedometer not working.

Faulty speed sensor

The speed sensor sends a signal to the speedometer, which indicates the speed of the vehicle. A bad speed sensor can cause inaccurate readings on the speedometer or no reading at all.

Faulty ECU

Most modern vehicles are equipped with an electronic control unit (ECU) that controls the fuel injectors, braking system, and suspension system, among other things. Problems with the ECU may prevent your vehicle from reading speed signals from the speed sensor.

Vehicle speed sensor calibration

After some repairs or replacement of parts, some vehicles require calibration of the vehicle speed sensor.

Alterations in vehicle

Modifications to older vehicles may result in damage to the speedometer.

How to Fix Your Speedometer

Examine any loose connections

Check for any loose or damaged parts in the wiring and connections that are connected to the speedometer.

Lookup for error codes

To look for fault codes connected to the speedometer or ECM, use an OBD-II scanner. Address any problems the codes have pointed out.

Take a look at the speedometer cable.

Check for wear or breakage on mechanical speedometer cables in automobiles. If necessary, change the cable.